walkeri Epimeria of the Southern Ocean with notes on their relatives (Crustacea, Amphipoda, Eusiroidea) d’Acoz, Cédric d’Udekem Verheye, Marie L. European Journal of Taxonomy 2017 2017-10-17 359 1 553 6FTVN Verheye, 2017 d’Acoz & Verheye 2017 [466,898,267,294] Malacostraca Epimeriidae Epimeria GBIF Animalia Amphipoda 109 110 Arthropoda species cinderella subgen. et sp. nov. Laevepimeria   urn:lsid:zoobank.org:act: A77C9AD4-391F-4101-8DFA-F15A45185A0E  Figs 235–240  ‘Clade C  walkericomplex - WA3’ – Verheye et al.2016a, supplement: 3 (online).    Etymology Cinderella, heroin of humble origin in a well-known folk tale. The name, which is a noun in apposition, alludes to the modest size and the absence of ornamentation of the species, which contrasts with the extravagant adornment and the impressive size of many ‘rival’  Epimeriaspecies.    Type material    Holotype RV Polarsterncruises: SOUTHERN OCEAN: ♂, cruise PS81, ANT-XXIX/3, stn 188-5, south east of Dundee Island, 63°50.92ʹ S, 55°37.66ʹ W to 63°50.93ʹ S, 55°37.52ʹ W,  402–407 m, Rauschert dredge,  20 Dec. 2013, coll. C. d’Udekem d’Acozand M. Verheye( RBINS, INV. 132656) [extraction I15; Genbank nr, COI: KU870841, 28S: KU759617].    Paratypes RV Polarsterncruises:  SOUTHERN OCEAN: 1 spec., cruise PS69, ANT-XXIII/8, stn 605-1, Elephant Island, 61°20.35ʹ S, 55°29.16ʹ W to 61°19.98ʹ S, 55°32.67ʹ W,  146–151 m, bottom trawl,  19 Dec. 2006, coll. C. d’Udekem d’Acozand H. Robert( RBINS, INV. 122528);  1 spec., cruise PS81, ANT-XXIX/3, stn 185-3, south eastof Dundee Island, 63°51.53ʹ S, 55°40.74ʹ W to 63°51.53ʹ S, 55°40.43ʹ W,  253–255 m, extremely fine sand mixed with some mud and gravel, Rauschert dredge,  19 Feb. 2013, coll. C. d’Udekem d’Acozand M. Verheye( RBINS, INV. 122965);  1 spec., cruise PS81, ANT-XXIX/3, stn 234-5, north of Livingstone Island, 62°17.36ʹ S, 61°12.06ʹ W to 62°17.31ʹ S, 61°12.63ʹ W,  248–251 m, mud with a lot of specimens of a small reddish ophiuroid with very long and flexible legs, Agassiz trawl,  7 Mar. 2013, coll. C. d’Udekem d’Acozand M. Verheye( RBINS, INV. 122949) [extraction ANT43; Genbank nr, COI: KU870829, 28S: KU759602]. RV James Clark Rosscruises: SOUTHERN OCEAN: 2 specs, cruise JR144, stn EI-EBS-4-supra, south of Elephant Island, 61°33’544” S, 55°20’379” W to 61°33’637” S, 55°20’901” W, epibenthic sledge, 270 m, 12 Mar. 2006, coll. BAS ( RBINS, INV. 132959) [extraction I4; Genbank nr, COI: KU870848, 28S: KU759625].   Other material RV Seatruck, cruise REVOLTA II: SOUTHERN OCEAN: 1 spec., stn REVO_140, Collect_ID: REVO_140, Adélie Coast, 66°37ʹ53.4″ S, 139°51ʹ18″ E, 106–172 m, 12 Jan. 2011, coll. N. Améziane, C. Gallut and A.C. Lautrédou ( MNHN-IU-2016-6885).    Description HEAD + ROSTRUM. Very strongly curved in lateral view. ROSTRUM. In lateral view short and broad, reaching 0.6 of article 1 of peduncle of antenna 1, anteriorly and ventrally straight, subacute; in dorsal view narrow, with straight converging borders, with tip blunt. EYES. Huge, broadly elliptic, partly anteriorly oriented (interocular distance about 1.5 × as wide as eye size when seen in frontal view). PEREION–PLEOSOME TOOTH PATTERN. Pereionites 1–7 and pleonites 1–2 totally smooth; pleonite 3 with weak posterior bump. COXAE 1–3. Coxa 1 blunt-tipped, coxa 2 with tip subacute, coxa 3 blunt-tipped. COXA 4. Narrow; anterodorsal border straight; anteroventral border nearly straight (inconspicuously convex), these two borders being joined by very broad rounded convexity, which is distinctly projecting forward; anterodorsal border 1.75 × as long as anteroventral border; posteroventral border nearly straight. COXA 5. Broad, posteroventral corner rounded in lateral view, not projecting laterally. COXA 6. Posterior border weakly convex; posteroventral corner very broadly rounded. COXA 7. Posterior border nearly straight (inconspicuously concave); posteroventral corner broadly rounded. EPIMERAL PLATES 1–3. Posteroventral angle very obtusely rounded in plate 1 (without any trace of tooth), produced into a small tooth in plates 2–3. UROSOME TOOTH PATTERN. Urosomite 1 with distinct asymmetrical dorsal process, anteriorly nearly straight, apically bluntly angulate, posteriorly weakly convex; urosomite 3 with dorsolateral borders very weakly convex, with tip very bluntly angulate. TELSON. Cleft on 0.2; lobes laterally very convex, medially nearly straight, with tips rounded; notch with borders weakly convergent and end rounded. GNATHOPODS 1–2. Carpus and propodus short and very broad; propodus not expanding distally, palm not reduced. PEREIOPOD 4. Merus, carpus and propodus long and slender, dactylus short. PEREIOPOD 5. Basis of normal width, with posteroproximal process absent, with posterodistal corner forming a blunt squared angle (not projecting posteriorly); merus, carpus and propodus long and slender, dactylus short. PEREIOPOD 6. Basis of normal width, with posteroproximal process absent, with posterodistal corner forming a blunt squared angle (not projecting posteriorly); merus, carpus and propodus long and slender, dactylus short. PEREIOPOD 7. Basis broad; posterior border strongly convex along all its length, terminated in a large rounded lobe projecting ventrally; merus very broad and short, carpus of medium width and short, propodus slender and short, dactylus short.   Body length Up to 15 mm.    Distribution Elephant Island, tip of Antarctic Peninsula, Adélie Coast; 106– 270 m.    Remarks   Epimeria cinderella sp. nov.can be easily distinguished from the related  E. anodon sp. nov.and  E. walkeriby its much narrower and more asymetrical coxa 4. The gnathopods and the basis of pereiopod 7 are also different.  Epimeria cinderella sp. nov.seems more similar to  Epimeria( Laevepimeria)sp. subgen. nov., which is only known from a very small juvenile. The tip of the coxae 1–2 of the young  Epimeria( Laevepimeria)sp. subgen. nov. examined are, however, much more rounded than in  Epimeria cinderella sp. nov., but this difference might disappear in adults. 2625583323 2013-12-20 2015-01 2013-12-20 Rauschert dredge RBINS C. d'Udekem d'Acoz & M. Verheye 405 -63.848835 Dundee Island 10 -55.62533 Island 109 110 RBINS, INV. 132656 1 1 Dundee Island holotype 5008569432 [234,359,967,993] 2006-12-19 bottom trawl RBINS C. d'Udekem d'Acoz & H. Robert 148 -61.33917 SOUTHERN OCEAN 10 -55.5445 109 110 1 Elephant Island paratype 5008569434 2013-02-19 Rauschert dredge RBINS C. d'Udekem d'Acoz & M. Verheye 254 -63.858833 Dundee Island 10 -55.673832 109 110 1 Dundee Island paratype 5008569313 2013-03-07 Agassiz trawl RBINS C. d'Udekem d'Acoz & M. Verheye 250 -62.289333 Livingstone Island 10 -61.2105 109 110 1 Livingstone Island paratype